Blog traffic and search-ranking changes - Google algo update is rolling out?

It looks like a Google Panda/Penguin algo update is rolling now. My blog visits and pageviews have suddenly started to increase (thank God) from 20th January (without any extra effort or changes from my side) and now I have about 33% extra visitors. I am sure many other bloggers (especially technology related) would have also been affected by this update.

Has anyone else also experienced this? please share here.